Floor-scrubbing machine



July 1Q, 1925. v 1,545,899

- L. HEITMAN v Picon SCRUBBNG MACHINE `Filed FebI 5, 1923 2 Sheets-Sheet l Z 'f V 5*!- glg. 5/

17 49 ummlumw ,7 43# l 'l (t I, 33N L INVENTOR Leon He/maf? ATTORNEY July 14, 1925. 1,545,899

Y L.HETMAN FLOOR SCRUBBING MAQHINE.

Filed Feb. 5, 1923 '2 Sheets-Sheet 2 ATTORNEY Patented July 14, 1925i.

UNITED sTATEs PATENT oFF-ICE.

LnoN HEITMAN,'0F NEW Yoitx, N. Y.

rLooR-scnUBBrNG MACHINE.

Application led February 5, 1923. Serial No. 616,887.

. chines, of which the following is aspecifcaof its objects to provide a manually operable wheeled tank having means for moistening the floorto be cleaned preliminary to the opera-tion of brushes thereover.

Another purpose is to produce a mechanism having bot-h a reciprocating scrub brush and a rotary brush,.both being selectively mounted and actuated by the mo-vement of the machine.

A further aimis in-the provision of a mop, also driven by the mechanism, provision being made for squeezing the same at intervals during its operation.

These and other like objects are attained by the novel construction and combination of parts hereinafter described in detail and shown in the accompanying drawing, and in Figure 1 is plan view showing an emf same being journaled in bearings 18 fixed within, its extending ends being mounted in wide-faced wheels 19 of such diameter as to cause the tank to clear the floor.

Fixed on the cover to extend upward and rearwardly is a propelling handle 20 andin the rear Wall of the tank is an inlet or filler nozzle 21, there being a faucet 22 below by which the tank can be drained.

Near the front of the tank, on each side, are nipples engaged in elbows communicating by horizontal pipes with another pair of elbows having between them a pipe 23 extending longitudinally in yadvance of the front wall ofthe tank and containing perfo-rations 24 permitting the water to kescape and moisten the floor. i

Fixed alongside one of the Wheels 19, is

a bevel gear 25 meshing with a pinion 26 revolubly mounted on a post 27 fixed in the cover plate 16, the` pinion carryinga rotatable stud 28 drilled transversely to re' ceive a rod 29 which can be held in adjustment by a clamp screw 30.

A spur gear 31 is rotatably mounted on the cover plate 16 near its center and has a raised central portion containing an undercut slot 32in which is slidably engaged the base o-f a studv 33 drilled to receive the rod 29 and which may be clamped in position by the screw 34, the device being so arranged that as the wheels 19V revolve, the gear 31 will be turned reciprocatively.

Meshing with the gear 31 'is a segment 35 pivoted on a stud '36 in the cover plate and having an oppositely extending cylindrical projection 37.

Holes are provided through the segment and cover plate respectively to receive a locking pin 38 when required. l

A socket 39 is engageable with the cylintwo adjusted positions relative tov it vbyS a locking pin 40.

t Formed with the socket is la lplate extension 41 to which is attached a rectangularv scrubbing brush 42 in such manner as to be drical element 37 and may be secured in .its

oscillated by itwhen the gearing is in oper- Attached to the opposite side of the late 41 is a bar 43 having downturned en s 44 in which is rotatably j'ournalled a shaft 45 having mounted on its ends ,Wheels 46 and 47 the vlatter having alongside -it a spur* gear 48. v

l This gear meshes with another gear 49 fixed on the end of a shaft 50 carried on the brackets 51 secured to the sides of the i tank 15.

The shaft 50 is driven by a gear 52 meshing with a mate 534ixed besides a sprocket wheel 54, over which is trained a chain -55 driven by a sprocket 56 fixed on the hub of the ear 25. l

T e sprocket wheel 54 and gear 53 are fixed at one end of a shaft 57, extending through the front of the tank.

Also fixed on the shaft 50 is an elongated hub 59 carrying a pair of opposed mop elements 60, which as they are rotated, pass over ythe lower front wall 58 of the tank and are engaged between a roll 61 mounted on the spindle 57 and a like roll 62 mounted'on the spindle 63 movable vertically in slots 65 in the tank. A

The upper roll is held normally depressed by flat springs 66, this roll being raised at each partial revolution of the mop 60 by pairs of double cams 67 fixed on the spindle 57, this device compressing the mops and squeezing the water to fall into the tank, being automatic in their action.

Mounted loosely on the axle is a sleeve member`45' secured to which is a split hub 68 carrying a cylindrical brush 69, the sleeve member having at one end a gear 70 driven by a pinion 71 which also meshes with an internal gear 72 formed interiorly of and concentric to the gear 48, thus causing the brush to rotate in a clock-wise direction as the apparatus is trundled over a floor.

In the several figures the revolving brushl is shown as in position for operation, at which time the screw 34 will be slackened allowing the rod 29 to play idly through the stud, and the locking pin 38 is insertedto prevent operation of the segment.

When it is desired to use the brush 42, the pin 40 is withdrawn, allowing the plate 41 to be reversed, bringing the revolving brush, wheels 46 and 47, together with their attached parts uppermost, the pin 40 replaced, the pin 38 removed and the rod 29 secured in the studs sol as to transmit motion to the brush as will be apparent.

The mop 60 not only makes contact with ,A floor scrubbing machine comprising in` combination with a wheeled tank, means for dispensing the contents thereof, and a cylindrical brush adapted to be rotated by the wheels of the tank in an opposite direction to said wheels, of a rotatable mop composed of -a single pair of flexible, textile, oppositely disposed elements arranged parallel to the axis of said brush, each of said elements periodically engaging the periphery of the brush, said tank having-an opening in its wall adjacent said mop and through which the mop elements are projected, a roll within the tank and rotatable with a supporting spindle, ellipticalcams carried at the ends of the spindle, a superposed second roll operating in slots in the tank walls and having `contact surfaces engaging said cams, springs urging said second roll downwardly, whereby said rolls are successively opened and closed to receive and squeeze said mop elements on being projected through the tank opening.

In witness whereof I have affixed my signature.

LEON HEITMAN. 

